Anna to the Infinite Power — Mildred Ames

She wasn't herself.

Anna Zimmerman Hart had always been different from other people. She was considered practically a genius -- even for the 1990's; she never seemed to have much in common with her family; and she didn't have any friends. Anna didn't mind being different, though. She liked it that way.

But Anna didn't realize how different she was. She didn't know she was being watched. She never suspected she was part of a grand master plan that would take away her whole identity.

Until she stepped out of her safe, protected world -- and met a stranger with her name, her face, and her mind.